Manufacture of sizing or finishing mediums.



DONAUER, F TBIESTE, AUSTRIA-HUNGARY,

AS$IGNOR TO THE FIRM 0E ERSTE TRIESTER REISSCHAL-FABRIKS-AKTIEN-GESELLSCI-IAF'I, 0F TRIESTE, AUSTRIA- MANUFACTURE OF SIZING OR FINISHING MEDIUMS.

, Patented oer. 4., into,

Serial No. 506,832.

rinneanir.

9"?23,68, Specification of Letters Patent. his Drawing. Application filed July 9, 1909.

To all whom it may concern:

it known that I, Gnonc Donannn in the firm Erste Triester Reisschiil-Fabmksrilrtien-Gesellschaft, residing at Via Roniagna 134, Trieste, Austria-Hungary, a sub ect of the King of Bavaria, have invented new and useful Improvements in the Manufacture of Sizing or Finishing li iediums, of which the following is a specification.

This invention relates to a process of manufacturing sizing or finishing media, which. process represents an important development and improvement of the process described in the U. S. Patent No. 849,413. The characteristic of the invention de scribed in the U. S. Patent No. 849,413 con I sists in that starchy or glutinous substances or an artificial mixture of starch and gluten, preferably rice rich in gluten or ordinary rice mixed with gluten, is first moderately steamed so as to loosen the tissue and then mixed with substances having an alkaline reaction, so as to separate the proteins, and is finally mixed with a solution of an on ganic acid. The product is then dried ata temperature under 100 centigrade and the dried product ground to powder. For separating the proteins ammonium carbonate 1s preferably used; but other alkaline subsuch as soda, lime,

stances may be employed,

lactic chalk, barytes. As the organic acid, acid has been found to be preferable.

Whereas the process carried out in accordance with Patent No. 849,413 onl allows of obtaining thickly liquid or viscir solutions, the employment of which is in many cases not suitable, Very thin solutions may be obtained by the hereinafter described process, which solutions retain the specific and excclicnt properties of the product manufactu. according to Patent No. 849,413. The

" described hereinafter,

ortant technical advantagesover the use Ol LlGXtIlII obtained from potato starch, inasmuch as the new process gives the goods a pronounced natural soft and cloth-like feel to the touch; further the colors are not nearly so strongly attacked as when any other starches are used; and greater economy is the result than is ossible with otherbfands of starch, inclusive of potato starch, which are opened up or con verted partly into dextrin according to the known process.

for instance,

finally a much j and are finally dried v The new process constitutes, besides having the advantage of great economy, substantial. technical progress in the sizing or finishing industry, and the process is used with advantage in all cases where either very thin solutions or solutions such as are produced by vegetable glue in Water are required.

The characteristic feature of the new process consists in this that the product obtained according to the U. S. Patent No. 849,413 is subjected to the known treatments which are used vfor converting starch into so "ar, dextrin or vegetable glue or gum, or note products similar tosugar, dextrin or vegetable glue. Such treatments, by means of which starch is converted into one of the products mentioned above,are, for instance, the treatment of the starch with acids (min-' oral or organic acid) with acid salts and subsequent neutralization of the acid b a suitable alkali, further treatment'with erments and enzymes which have the property of inverting starch, as for example, diamalt, diastaphor and the like, and finally treatment of the starch with a strong alkali, such as soda lye or the like and the final neutralization by a suitable acid, thus obtaining the so-called vegetable glue or gum.

If the product obtained according to Patent No. 849,413 is subjected as already stated, to the treatments referred to above a final product will be obtained which is' easily soluble in water in a specific manner and which retains the. valuable properties of the ori 'nal productdbtained according to Patent 1 0. 849,413.

In Patent No..849,413 rice as'well as other substances containing starch and protein may be used as starting or primary materia s. The best results are obtained according to. the new process if avmaterial is used as primary product, which is obtained according to Patent No. 849,413, rice being used as primary material. In Patent 849,413 the process of manufacture is described in an example as follows ;-The grains of rice, after being moderately steamed re then treated with a 50 per cent. solution of ammonium carbonate {onepart ammonium carbonate to 20 parts oi the protein contained) and afterward with asolution of lactic acid (2 arts of anhydrous lactic acid to 8 parts of protein contained) and ground. The

product so obtained which gives an acid reaction is neutralized with soda, when used in the manner usually adopted in the dressing and finishing industry. A perfectly neutral product, however, can be obtained if such quantities of lactic acid are used during the process described above, which are just suflicient to neutralize the ammonium carbonate still to be found. Such will be the case, for instance if one part of ammonium carbonate is used for every eight parts of protein contained, and two parts of anhydrous lactic acid for every twenty parts of protein.

Examples of carrying out the process are given herewith 1. Treating the product obtained according to Patent No. 849,413 with sulfuric acid and with subsequent neutralization of the acid by an alkali :T he following treatment with sulfuric acid has been found very suitable. 10 kg. of the product produced in ac- .cordance with Patent No. 849,413 are put in a double-walled boiler and stirred with 20 liters of water so as to form a uniform paste, and thereafter 10-30 liters of water are added, depending upon whether a thick or thin boiling product is required. About 300 cc. of sulfuric acid of 66 B. are then added in thin jets which sulfuric acid is to serve as opening up agent, the whole mixture being stirred while the acid is being added. Steam is then admitted and the product first of all thickens and becomes pasty, but changes later on into a thin liquid. As soon as the mixture begins to boil (which takes place after the expiration of about 10-15 minutes) it is left boiling for five minutes,

thereafter the vessel emptied and the mass heated to about C., allowed to stand for 10-15 minutes ,and then boiled for 5-10 minutes. The sizing or finishing material is ina perfectly thin liquid condition and is ready for immediate use after having been neutralized, if required.

3. Treatment of the product obtained in accordance with Patent No. 849,413 with a strong alkali and subsequent neutralization by means of a suitable acid :-'The product produced according to Patent'No. 849,413

'is treated in the cold with soda lye, in a similar manner to the treatment of starch,

- form a uniform paste, ad ing furt which is to be converted into vegetable glue or gum, and the solution is neutralized by means of sulfuric acid.

I, claim 1. The process for manufacturing sizing or finishing media, which consists in steaming substances containing starch and gluten, then mixing the substance with a substance having an alkaline reaction, then mixing the product with a solution of an organic acid, and finally subjecting the product so obtained to treatment for the purpose of chan ing the constitution of the starch.

2. The process for manufacturing sizing or finishing media, which consists in steaming substances containing starch and gluten, then mixing the substance with a substance having an alkaline reaction, then mixing the product with a solution of an organic acid, and then subjecting the product so obtained to treatment with acids and alkalies.

3. The process for manufacturing sizing or finishing media, which consists in steaming substances containing starch and gluten, then mixing the substance with a substance having an alkaline reaction, then mixing the product with asolution of an organic acid, then treating the product so obtained with sulfuric acid, and finally neutralizing the mass with an alkali.

4. The process for manufacturing sizing or finishing media, which consists in steaming substances containing starch and gluten, then mixing the substance with a substance having an alkaline reaction, then mixing the product with a solution of an organic acid, then adding water to the mass so ob tained so as to form a uniform paste, then treating the mass with sulfuric acid, treating the mass with steam, allowing to boil, and finally neutralizing the mass with soda.

5. The process for manufacturing sizing or finishing media, which consists in steaming a substance containing starch and gluten, then mixing the substance with a solution of ammonium carbonate, then mixing the product with a solution of lactic acid,then drying the mass, adding waterto the product so obtained with accompanyin stirring1 so as to er quantities of water, treating the mass with sulfuric acid with accompanying stirring, treating the masswith steam, allowing to boil, neutralizing the mass with soda, and

allowing to cool while stirrin In testimony whereof I a x my signa ture in the presence of two witnesses.

GEORG DONAUER.

Witnesses VINCENT Bonus, HENRY Lown. 

